/*
 * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
 * (the "License"). You may not use this work except in compliance with the License, which is
 * available at www.apache.org/licenses/LICENSE-2.0
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied, as more fully set forth in the License.
 *
 * See the NOTICE file distributed with this work for information regarding copyright ownership.
 */

package alluxio.network;

import java.io.IOException;
import java.net.ServerSocket;

/**
 * Utility methods for working with ports.
 */
public class PortUtils {

  /**
   * @return a port that is currently free. Note that this port is not reserved and may be taken at
   *         any time
   */
  public static int getFreePort() throws IOException {
    try (ServerSocket s = new ServerSocket(0)) {
      s.setReuseAddress(true);
      return s.getLocalPort();
    }
  }
}
